What Tong Xuan wants to do is a hand-cranked generator, and the main equipment includes wooden supports, copper coils, magnets, glass lampshades and carbonized bamboo wire.

The bracket can be made on its own, it is nothing more than a matter of a few wooden frames and nails.

Magnets are readily available, and you can use them if you find a suitable size.

The glass lampshade is more troublesome and needs to be customized in the glass factory, but fortunately, the glass factory is also in Xishan, so you don't have to run around.

As for the carbonized bamboo silk, you need to cut the bamboo and fire it yourself.

Copper wire and cotton yarn are also ready-made, so far, Zhu Jianshen has finally done a serious thing, that is, to wrap all the copper wires in cotton yarn, and it is a thick layer, using up more than a dozen rolls of cotton yarn.

Tong Xuan was worried that he would make trouble if he was idle, so he found a bundle of copper wire and dozens of rolls of cotton yarn and asked him to continue to wrap up.

Zhu Jianshen was very interested at first, but later, he gradually lost patience, and just hurriedly wrapped around and perfunctory.

After three days like this, Zhu Jianshen, who had been wrapped in cotton yarn for three days, became more and more irritable.

"Master Tong, I'm done with everything."

Tong Xuan looked at it, these cotton yarns were entangled, thick and fine, messy, but he didn't care too much, after all, he was a child, and it was already very good to be able to finish this.

Zhu Jian looked at him with deep eyes, as if to say, I'm just a child......

"Your Highness, please stand back."

Tong Xuan was about to start assembling it, when he suddenly remembered the fire in the laboratory, and hurriedly signaled Zhu Jianshen to keep his distance.

There must be risks in experiments, it doesn't matter if something happens to you, if you hurt the prince, the sin will be great!

Zhu Jianshen was very obedient, took a few steps back, and then found a small bench to sit down and turned on the onlooker mode.

"Master Tong, what are you doing?"

"Master Tong, why does the copper wire need to be wrapped in cotton yarn?"

"That glass ......"

"Your Highness!"

Tong Xuan was irritable in his heart, so he had to interrupt: "Don't talk yet, I'll explain to you later, okay?" ”

"Well, good!"

Zhu Jianshen resisted the urge to do it, and watched Tong Xuan assemble the parts in front of him in the same way.

Soon, a hand-cranked generator was assembled, Tong Xuan let out a sigh, held down the handle, and gently shook it twice.

However, nothing happened.

Tong Xuan frowned, continued to shake, the wooden stick with the magnet slowly rotated, and then looked at the glass cover, the carbonized bamboo silk inside did not react at all.

Why?

He didn't understand it very much, because the drawings were given by the emperor, and in his cognition, the emperor was omnipotent, and it was absolutely impossible to be wrong.

Think about it, from improved firearms, to steam engines, trains, ironclads...... Every invention can be called a miracle, how can a small generator go wrong?

There must be something wrong with the link!

Yes, I must have been negligent......

In a hurry, the movements of his hands also became faster, and suddenly, he only felt a flash of fire in front of him......

Tong Xuan subconsciously took two steps back, and then saw that the cotton yarn wrapped around the copper wire was on fire!

Zhu Jianshen jumped up from the bench excitedly and shouted, "Yes, it was the same that day!" ”

After saying that, turn around and run.

Tong Xuan reacted, looked around, and there was nothing to take advantage of, so he took off his coat, stepped forward and slapped it for a while, and soon, the fire was extinguished.

Zhu Jianshen had already run out of the door, but he didn't see Tong Xuan come out for a long time, so he shouted: "Master Tong, come out quickly!" ”

However, he shouted twice, but he didn't see any movement inside, and thought that something had happened to Tong Xuan, so he dared to return to the door and look over.

"Hey, the fire is out?"

Tong Xuan didn't answer, just stared blankly at the natural generator just now, and fell into deep thought.

What does the fire in cotton yarn mean?

At the very least, electricity has been generated in the copper wires!

He removed the copper wire, replaced it with a new one, and tried it again.

This time, I saw the filament flicker, and then the cotton yarn caught fire again.

Tong Xuan's eyes were full of hope, he probably understood one thing, the rotation of the magnet can indeed generate electricity in the copper wire, and this point can ignite the filament or the cotton yarn.

Moreover, as soon as the cotton yarn caught fire, the electricity was gone.

He hurriedly took out a pen and notebook and recorded his findings.

Then, continue to replace it with a piece of copper wire and experiment again.

What is shocking is that this time, the carbonized bamboo wire in the glass cover continues to shine, and the cotton yarn outside the copper wire does not catch fire!

Tong Xuan was overjoyed, his hand did not stop, and he continued to shake the magnet, and after a while, finally, the bamboo silk flashed for a moment, and then went out.

Only then did he stop, and found himself tired and sweating profusely.

I wanted to get a pen and paper to record, but I couldn't even lift my arms.

Zhu Jian squatted beside him and asked, "Master Tong, that one just now, that thing...... Is it a candle? ”

"It's not!"

Tong Xuan shook his head, with a relieved smile on his face.

"That's ...... Oil lamp? ”

"Not really."

Tong Xuan closed his eyes and lay back, feeling his whole body relaxed.

It worked!

"Master Tong, don't lie on the ground, it's cold on the ground......

Zhu Jianshen didn't finish speaking, but he was held in Tong Xuan's arms.

"Your Highness, we succeeded, succeeded!"

Tong Xuan was very excited, and he didn't care about the etiquette of the monarch and ministers at this time, just like a child, he hugged Zhu Jianshen and laughed.

Zhu Jianshen rode on him and said, "Master Tong, what is that?" ”

"It's a generator!"

"What is a generator?"

"It is through a set of devices that generate electricity, which is the electricity that thunders and lightning on a rainy day!"

"Lightning...... Wasn't it from the thunder male and electric mother? ”

"Haha!"

Tong Xuan smiled and said, "With the generator, there is no need for the thunder male and electric mother!" ”

Zhu Jianshen turned his head, glanced at the so-called "generator", and asked, "What's the use of electricity?" ”

"There's so much to do!"

Tong Xuan closed his eyes, his face filled with the joy of success.

"The first one is the electric light!"

"Electric light...... What is it? ”

"It's an electric lamp, and with electric lights, there will be no need for oil lamps in the future."

Tong Xuan opened his eyes, picked up Zhu Jianshen and put it aside, then picked up a pen and paper and began to record.

He had to record the results of the experiment as soon as possible, and then look for the reasons for the failure of the previous experiments.

As for the last one, although it was successful, it was clear that the filament was not resistant to burning and could not continue to shine.

This alone requires a lot of effort to improve, specifically, to find different varieties of bamboo from all over the world, and use different methods when carbonizing, and finally find a filament with good luminous effect and burn-resistance.

However, what he couldn't understand was why, in the previous experiment, the cotton yarn around the copper wire caught fire, and the last time, the filament was burned, but the cotton yarn was intact.

Tong Xuan thought about it for a long time, but he was still confused.

I'm afraid that only the emperor can answer this question, but he doesn't want to trouble the emperor for these trivial questions.

So, he removed the copper wire, held it in his hand, and looked at it carefully.

This copper wire is already the first time Zhu Jianshen has wrapped it, because the cotton yarn on the periphery is very thick and tightly wrapped.

Suddenly, a thought crossed his mind.

Could it be related to the tightness of the cotton yarn wrapping?

However, the cotton yarn on the outside of the first two copper wires has been burned clean, and now that I think about it, I don't remember what it looked like at that time.

"Your Highness, do you remember that the copper wire that caught fire in the laboratory was wrapped with a lot of cotton yarn around it?"

Zhu Jianshen listened, tilted his head and thought for a while before saying, "Not much!" ”

Tong Xuan's eyes lit up, and he asked again, "Your Highness remembers clearly?" ”

"Hmm!"

Zhu Jianshen nodded and said, "Those cotton yarns are not tightly wrapped, and a lot of copper wires are exposed, just like this!" ”

As he spoke, he pointed to the ground, the copper wire should have been wound by him later, far less careful than the first one.

Tong Xuan picked up the thread and observed it carefully.

Soon, he found the clue.

All the copper wires have been made into a cylindrical shape, and this wire, due to the loose wrapping of the outer cotton yarn, leads to direct contact between the copper wires.

Look at the thread that was successfully tested just now, but it was tightly wrapped and did not touch it at all.

Now, he seems to understand.

"Your Highness, please stay away!"

Tong Xuan replaced the filament, then replaced the copper wire that was in contact, and shook the handle when he was ready, with the rapid rotation of the magnet, there was a loud sound, and a burst of electric light sparks burst out from the copper wire, and then, the cotton yarn ignited again.

Zhu Jianshen was far away and shouted, "Master Tong, it's on fire!" ”

Tong Xuan did not rush to extinguish the fire, but danced excitedly, as if he had found the door to a new world.

-----------------

Master of Ceremonies, Huai'en's heart is about to break.

As the chief eunuch of Ouchi, there were two fires in the Forbidden City, isn't this a slap in the face?

Do the people of the Academy of Sciences study how to set fires every day?

If it goes on like this, will it not be allowed to live?

This is the palace, if there is a mess, who will be responsible?

He first found Belin, and the two accompanied the emperor to Nanyang together, and they can be regarded as comrades-in-arms who have carried guns together, so there is no need to go around in circles if there is anything to say, just be straightforward.

However, in response to this problem, Belin is also helpless.

Because many projects of the Academy of Sciences need experiments to verify, doing experiments will definitely be risky.

All he can do now is to strengthen preventive measures and let the students pay attention to safety as much as possible in the process of doing experiments and not cause accidents.

In desperation, Wynne had to take matters into his own hands and vigorously rectify it.

Inside and outside the palace, the six ministries and nine qing, the Hanlin Academy, the Academy of Sciences, and all the yamen must be thoroughly investigated to see if there are flammable and explosive materials, whether there are fire prevention measures, and even emergency precautions, and how to deal with fires.

As for candles and oil lamps, they are strictly controlled.

Wherever candles are needed, they must be applied for in advance and distributed strictly according to demand.

After dawn, if it is not used up, it must be handed over to the warehouse, and it must be re-applied after using it in the evening.

For the Liubu Jiuqing and Hanlin Yuan, the use of candles and oil lamps is not large, because this is the outer city of the imperial palace, and it is only on duty during the day, and it is necessary to go out of the noon gate before dark at night.

At most, it is a rainy day, when the light is not good, or when it is dark early in the winter night, and the lights need to be lit.

Now the celebrant strictly controls the lamps and candles, so don't light them, if it gets dark early, just leave work early.

Or sit and drink tea, drink until the time and then leave work.

On weekdays, if it's a rainy day, just make do with it, do it if you can do it, and drink tea if you can't do it.

However, the impact on the Academy of Sciences is greater.

Because many experiments in the Academy of Sciences require the use of fire, oil lamps and candles, and even coal.

And all these things are strictly controlled.

I want it, I can, and I apply for it.

If the application is approved, it will be issued according to the amount, and there is the supervision of the whole process of the East Factory, and the amount must be handed over in full if it is not used up.

But the problem is that the application process is troublesome.

After all, the celebrant is not engaged in scientific research, and he doesn't understand what projects and what experiments he does at all, so that when he audits, he can cut it, and if he sees you applying for ten catties of lamp oil, he will ask, is one catty enough?

Not enough, what about two catties?

Not enough?

Those two and a half pounds, no more!

In short, it will never be paid in full.

In just a few days, the Academy of Sciences complained, and Belin approached Wynne under great pressure, hoping that the Master of Ceremonies could relax the restrictions on lamps and candles and other materials, otherwise, the progress of many projects of the Academy of Sciences would be affected.

In particular, some key issues are at a critical juncture, and now they are stagnant, which will not only affect progress, but also affect morale.

Wynpi said with a smile: "It's also difficult for our family to do, the weather is dry, and the Academy of Sciences needs so much candle and lamp oil every day, in case of running out of water, who will be responsible?" ”

Belin replied, "The Academy will be cautious. ”

Huai En smiled and said, "Dean Bei, you and I are both doing things for the emperor, we should be considerate of each other, there has been no major incident in the Forbidden City for many years, and your Academy of Sciences does experiments every day...... Hey, it's hard for us to do it! ”

Belin explained: "Since it is science, of course it needs to be demonstrated by experiments, otherwise how can it be proved? ”

"We don't understand what you said, but we know that there must be no accident in the Forbidden City, otherwise, our family will not be able to cut off a hundred heads!"

"Grandpa Huai, there's no need to make such a fuss, right?"

"It's really not a fuss!"

Wynne shook his head and said, "How does the power laboratory go through the water, we don't need to say more, right?" ”

"But that's just ...... Special Cases......"

"Who can guarantee that other labs won't travel under special circumstances? This is the palace, the emperor's safety is always the first, besides, the six departments of Jiuqing and the Hanlin Academy didn't say anything, but the Academy of Sciences complained, we think that you, the dean, should take care of it. ”

Belin was furious, but helpless.

Because he couldn't refute it, or rather, he also knew that the laboratories under his hands did have some hidden dangers.

Now your celebrant is directly cutting and not even giving a candle or a pound of lamp oil, is it too much?

If he encountered resistance in other aspects, he went directly to the emperor.

What's more, if you encounter someone who deliberately embarrasses yourself, you will be beaten up if you get in a hurry.

However, not this time.

Wynne was right, this thing was really hard to do.